#537EBB#537EBB

#537EBB is a mid, moderate blue. Relative luminance 0.203; OKLCH L 58.9% C 0.106 H 257.2°. Best body text is #000000 at 5.07:1 contrast (WCAG AA passes).

Color values

HEX	#537EBB
RGB	rgb(83, 126, 187)
HSL	hsl(215, 43%, 53%)
HSV	hsv(215, 56%, 73%)
CMYK	cmyk(55.6%, 32.6%, 0%, 26.7%)
CIE-LAB	lab(52.23, 3.29, -36.54)
CIE-LCH	lch(52.23, 36.69, 275.14°)
OKLab	oklab(58.88% -0.0234 -0.103)
OKLCH	oklch(58.88% 0.106 257.2)
XYZ	xyz(19.9947, 20.3470, 49.8778)
Luminance	0.2035 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#537EBB #BB9053

analogous

#53B2BB #537EBB #5C53BB

triadic

#537EBB #BB537E #7EBB53

tetradic

#537EBB #BB53B2 #BB9053 #53BB5C

square

#537EBB #BB53B2 #BB9053 #53BB5C

split-complementary

#537EBB #BB5C53 #B2BB53

monochromatic

#2A446A #3B6196 #537EBB #7F9FCC #ABC0DE

Accessibility & contrast

On white

4.14

#537EBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.07

#537EBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #537EBB

5.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##537EBB	#FFFFFF	#000000	##000000
##537EBB	1.00	4.14	5.07	5.07
#FFFFFF	4.14	1.00	21.00	21.00
#000000	5.07	21.00	1.00	1.00
##000000	5.07	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6582BE

Deuteranopia (green-blind)

#5878BA

Tritanopia (blue-blind)

#0C8C94

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #537ebb;
/* rgb */ color: rgb(83, 126, 187);
/* oklch */ color: oklch(58.9% 0.106 257.2);

Tailwind

colors: {
  custom: {
    50: '#8ba3cf',
    500: '#537ebb',
    950: '#000000',
  },
}

SCSS

$custom: #537ebb;
$custom-light: #8ba3cf;
$custom-dark: #000000;

JSON

{
  "hex": "#537ebb",
  "rgb": {
    "r": 83,
    "g": 126,
    "b": 187
  },
  "hsl": {
    "h": 215.192,
    "s": 43.333,
    "l": 52.941
  },
  "oklch": {
    "l": 0.58883,
    "c": 0.10564,
    "h": 257.2
  },
  "luminance": 0.20349
}

Semantic roles & 50–950 ramp

primary

#537EBB

secondary

#CBB99E

accent

#9F55D3

background

#F8FAFC

surface

#F0F3F9

border

#CBCDD2

text

#0C0F14

muted

#7D7F82

Preview Lab

Preview with #537EBB

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →